Kill a warning on the SGI compiler.
This is part of SF patch #434992.
diff --git a/Modules/unicodedata.c b/Modules/unicodedata.c
index 69345ea..4711123 100644
--- a/Modules/unicodedata.c
+++ b/Modules/unicodedata.c
@@ -282,7 +282,7 @@
     int word;
     unsigned char* w;
 
-    if (code < 0 || code >= 65536)
+    if (code >= 65536)
         return 0;
 
     /* get offset into phrasebook */